Measurement of the charged pion mass using a low-density target of light atoms M. Trassinelli, D.F. Anagnostopoulos, G. Borchert, A. Dax, J.-P. Egger, D. Gotta, M. Hennebach, P. Indelicato, Y.-W. Liu, B. Manil et al. (3 more) EPJ Web Conf., 130 (2016) 01022 Published online: 29 November 2016 DOI: 10.1051/epjconf/201613001022